CVE-2026-43093

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43093
In the Linux kernel, the following vulnerability has been resolved: xsk: tighten UMEM headroom validation to account for tailroom and min frame The current headroom validation in xdp_umem_reg() could leave us with insufficient space dedicated to even receive minimum-sized ethernet frame. Furthermore if multi-buffer would come to play then skb_shared_info stored at the end of XSK frame would be corrupted. HW typically works with 128-aligned sizes so let us provide this value as bare minimum. Multi-buffer setting is known later in the configuration process so besides accounting for 128 bytes, let us also take care of tailroom space upfront.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0ec4d3f6e6934deb843b561ae048cd17218e5ad1 Patch
https://git.kernel.org/stable/c/1a6051cd7e3e4c54ff3854a43b638b9292af5e67
https://git.kernel.org/stable/c/5f123bc278bf4e3283d8606321bebbfd299f4384
https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39 Patch
https://git.kernel.org/stable/c/8769708add9eadeea8041a9761771bb715a87104
https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12 Patch
https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f Patch
https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

01 Jun 2026, 17:17

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/1a6051cd7e3e4c54ff3854a43b638b9292af5e67 -
  • () https://git.kernel.org/stable/c/5f123bc278bf4e3283d8606321bebbfd299f4384 -
  • () https://git.kernel.org/stable/c/8769708add9eadeea8041a9761771bb715a87104 -

19 May 2026, 20:40

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:5.7:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.7:rc2:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/0ec4d3f6e6934deb843b561ae048cd17218e5ad1 - () https://git.kernel.org/stable/c/0ec4d3f6e6934deb843b561ae048cd17218e5ad1 - Patch
References () https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39 - () https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39 - Patch
References () https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12 - () https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12 - Patch
References () https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f - () https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f - Patch
References () https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931 - () https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931 - Patch
CWE NVD-CWE-noinfo

08 May 2026, 13:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8

06 May 2026, 10:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-06 10:16

Updated : 2026-06-01 17:17

NVD link : CVE-2026-43093

Mitre link : CVE-2026-43093

CVE.ORG link : CVE-2026-43093

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo